Home / 1,487,120.09-2,230,681.41-407,644.40

Finding the Fourth Proportional to 1,487,120.09, 2,230,681.41 and 407,644.40

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Solution

The fourth proportional to 1,487,120.09, 2,230,681.41 and 407,644.40 is: 611,466.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,120.09 : 2,230,681.41 = 407,644.40 : x
  2. Step 2: Convert to fraction form
    1,487,120.09/2,230,681.41 = 407,644.40/x
  3. Step 3: Cross multiply
    1,487,120.09x = 2,230,681.41 × 407,644.40
  4. Step 4: Simplify right side
    1,487,120.09x = 909,324,779,719.50
  5. Step 5: Solve for x
    x = 909,324,779,719.50/1,487,120.09
  6. Step 6: Final answer
    x = 611,466.94

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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.