Home / 405,655,559,136.90-608,483,338,705.35-286,639,984,916.10

Finding the Fourth Proportional to 405,655,559,136.90, 608,483,338,705.35 and 286,639,984,916.10

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Solution

The fourth proportional to 405,655,559,136.90, 608,483,338,705.35 and 286,639,984,916.10 is: 429,959,977,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,655,559,136.90 : 608,483,338,705.35 = 286,639,984,916.10 : x
  2. Step 2: Convert to fraction form
    405,655,559,136.90/608,483,338,705.35 = 286,639,984,916.10/x
  3. Step 3: Cross multiply
    405,655,559,136.90x = 608,483,338,705.35 × 286,639,984,916.10
  4. Step 4: Simplify right side
    405,655,559,136.90x = 174,415,655,028,199,685,881,856
  5. Step 5: Solve for x
    x = 174,415,655,028,199,685,881,856/405,655,559,136.90
  6. Step 6: Final answer
    x = 429,959,977,374.15

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.