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Finding the Fourth Proportional to 487,636.20, 731,454.30 and 403,655.40

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Solution

The fourth proportional to 487,636.20, 731,454.30 and 403,655.40 is: 605,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,636.20 : 731,454.30 = 403,655.40 : x
  2. Step 2: Convert to fraction form
    487,636.20/731,454.30 = 403,655.40/x
  3. Step 3: Cross multiply
    487,636.20x = 731,454.30 × 403,655.40
  4. Step 4: Simplify right side
    487,636.20x = 295,255,478,048.22
  5. Step 5: Solve for x
    x = 295,255,478,048.22/487,636.20
  6. Step 6: Final answer
    x = 605,483.10

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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.