Home / 1,210,889.80-1,815,038.70-411,430.60

Finding the Fourth Proportional to 1,210,889.80, 1,815,038.70 and 411,430.60

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Solution

The fourth proportional to 1,210,889.80, 1,815,038.70 and 411,430.60 is: 616,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,889.80 : 1,815,038.70 = 411,430.60 : x
  2. Step 2: Convert to fraction form
    1,210,889.80/1,815,038.70 = 411,430.60/x
  3. Step 3: Cross multiply
    1,210,889.80x = 1,815,038.70 × 411,430.60
  4. Step 4: Simplify right side
    1,210,889.80x = 746,762,461,364.22
  5. Step 5: Solve for x
    x = 746,762,461,364.22/1,210,889.80
  6. Step 6: Final answer
    x = 616,705.55

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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.