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Finding the Fourth Proportional to 676,645.95, 933,652.72 and 386,124.87

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Solution

The fourth proportional to 676,645.95, 933,652.72 and 386,124.87 is: 532,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,645.95 : 933,652.72 = 386,124.87 : x
  2. Step 2: Convert to fraction form
    676,645.95/933,652.72 = 386,124.87/x
  3. Step 3: Cross multiply
    676,645.95x = 933,652.72 × 386,124.87
  4. Step 4: Simplify right side
    676,645.95x = 360,506,534,169.83
  5. Step 5: Solve for x
    x = 360,506,534,169.83/676,645.95
  6. Step 6: Final answer
    x = 532,784.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.