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Finding the Fourth Proportional to 487,506.40, 731,259.60 and 425,298.40

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Solution

The fourth proportional to 487,506.40, 731,259.60 and 425,298.40 is: 637,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,506.40 : 731,259.60 = 425,298.40 : x
  2. Step 2: Convert to fraction form
    487,506.40/731,259.60 = 425,298.40/x
  3. Step 3: Cross multiply
    487,506.40x = 731,259.60 × 425,298.40
  4. Step 4: Simplify right side
    487,506.40x = 311,003,537,864.64
  5. Step 5: Solve for x
    x = 311,003,537,864.64/487,506.40
  6. Step 6: Final answer
    x = 637,947.60

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Similar ratio
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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.