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Finding the Fourth Proportional to 708,038.70, 978,336.27 and 565,971.18

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Solution

The fourth proportional to 708,038.70, 978,336.27 and 565,971.18 is: 782,033.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,038.70 : 978,336.27 = 565,971.18 : x
  2. Step 2: Convert to fraction form
    708,038.70/978,336.27 = 565,971.18/x
  3. Step 3: Cross multiply
    708,038.70x = 978,336.27 × 565,971.18
  4. Step 4: Simplify right side
    708,038.70x = 553,710,133,168.70
  5. Step 5: Solve for x
    x = 553,710,133,168.70/708,038.70
  6. Step 6: Final answer
    x = 782,033.71

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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.