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Finding the Fourth Proportional to 616,639.90, 924,959.85 and 403,750.30

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Solution

The fourth proportional to 616,639.90, 924,959.85 and 403,750.30 is: 605,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,639.90 : 924,959.85 = 403,750.30 : x
  2. Step 2: Convert to fraction form
    616,639.90/924,959.85 = 403,750.30/x
  3. Step 3: Cross multiply
    616,639.90x = 924,959.85 × 403,750.30
  4. Step 4: Simplify right side
    616,639.90x = 373,452,816,925.46
  5. Step 5: Solve for x
    x = 373,452,816,925.46/616,639.90
  6. Step 6: Final answer
    x = 605,625.45

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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.