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Finding the Fourth Proportional to 572,486.60, 858,038.70 and 291,859.40

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Solution

The fourth proportional to 572,486.60, 858,038.70 and 291,859.40 is: 437,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,486.60 : 858,038.70 = 291,859.40 : x
  2. Step 2: Convert to fraction form
    572,486.60/858,038.70 = 291,859.40/x
  3. Step 3: Cross multiply
    572,486.60x = 858,038.70 × 291,859.40
  4. Step 4: Simplify right side
    572,486.60x = 250,426,660,158.78
  5. Step 5: Solve for x
    x = 250,426,660,158.78/572,486.60
  6. Step 6: Final answer
    x = 437,436.72

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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.