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Finding the Fourth Proportional to 570,463.79, 854,434.31 and 390,121.83

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Solution

The fourth proportional to 570,463.79, 854,434.31 and 390,121.83 is: 584,320.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,463.79 : 854,434.31 = 390,121.83 : x
  2. Step 2: Convert to fraction form
    570,463.79/854,434.31 = 390,121.83/x
  3. Step 3: Cross multiply
    570,463.79x = 854,434.31 × 390,121.83
  4. Step 4: Simplify right side
    570,463.79x = 333,333,474,681.38
  5. Step 5: Solve for x
    x = 333,333,474,681.38/570,463.79
  6. Step 6: Final answer
    x = 584,320.13

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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.