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Finding the Fourth Proportional to 570,916.89, 787,854.47 and 316,270.17

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Solution

The fourth proportional to 570,916.89, 787,854.47 and 316,270.17 is: 436,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,916.89 : 787,854.47 = 316,270.17 : x
  2. Step 2: Convert to fraction form
    570,916.89/787,854.47 = 316,270.17/x
  3. Step 3: Cross multiply
    570,916.89x = 787,854.47 × 316,270.17
  4. Step 4: Simplify right side
    570,916.89x = 249,174,865,580.81
  5. Step 5: Solve for x
    x = 249,174,865,580.81/570,916.89
  6. Step 6: Final answer
    x = 436,446.83

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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.