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Finding the Fourth Proportional to 687,235.86, 948,417.43 and 429,265.54

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Solution

The fourth proportional to 687,235.86, 948,417.43 and 429,265.54 is: 592,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,235.86 : 948,417.43 = 429,265.54 : x
  2. Step 2: Convert to fraction form
    687,235.86/948,417.43 = 429,265.54/x
  3. Step 3: Cross multiply
    687,235.86x = 948,417.43 × 429,265.54
  4. Step 4: Simplify right side
    687,235.86x = 407,122,920,234.36
  5. Step 5: Solve for x
    x = 407,122,920,234.36/687,235.86
  6. Step 6: Final answer
    x = 592,406.40

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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.