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Finding the Fourth Proportional to 572,492.70, 858,004.65 and 319,772.70

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Solution

The fourth proportional to 572,492.70, 858,004.65 and 319,772.70 is: 479,248.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,492.70 : 858,004.65 = 319,772.70 : x
  2. Step 2: Convert to fraction form
    572,492.70/858,004.65 = 319,772.70/x
  3. Step 3: Cross multiply
    572,492.70x = 858,004.65 × 319,772.70
  4. Step 4: Simplify right side
    572,492.70x = 274,366,463,543.06
  5. Step 5: Solve for x
    x = 274,366,463,543.06/572,492.70
  6. Step 6: Final answer
    x = 479,248.84

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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.