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Finding the Fourth Proportional to 605,400.90, 908,101.35 and 538,916.10

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Solution

The fourth proportional to 605,400.90, 908,101.35 and 538,916.10 is: 808,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,400.90 : 908,101.35 = 538,916.10 : x
  2. Step 2: Convert to fraction form
    605,400.90/908,101.35 = 538,916.10/x
  3. Step 3: Cross multiply
    605,400.90x = 908,101.35 × 538,916.10
  4. Step 4: Simplify right side
    605,400.90x = 489,390,437,946.74
  5. Step 5: Solve for x
    x = 489,390,437,946.74/605,400.90
  6. Step 6: Final answer
    x = 808,374.15

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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.