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Finding the Fourth Proportional to 570,551.77, 787,386.05 and 315,902.98

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Solution

The fourth proportional to 570,551.77, 787,386.05 and 315,902.98 is: 435,959.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,551.77 : 787,386.05 = 315,902.98 : x
  2. Step 2: Convert to fraction form
    570,551.77/787,386.05 = 315,902.98/x
  3. Step 3: Cross multiply
    570,551.77x = 787,386.05 × 315,902.98
  4. Step 4: Simplify right side
    570,551.77x = 248,737,599,605.43
  5. Step 5: Solve for x
    x = 248,737,599,605.43/570,551.77
  6. Step 6: Final answer
    x = 435,959.74

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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.