Home / 917,715.24-1,266,463.62-515,321.64

Finding the Fourth Proportional to 917,715.24, 1,266,463.62 and 515,321.64

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Solution

The fourth proportional to 917,715.24, 1,266,463.62 and 515,321.64 is: 711,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,715.24 : 1,266,463.62 = 515,321.64 : x
  2. Step 2: Convert to fraction form
    917,715.24/1,266,463.62 = 515,321.64/x
  3. Step 3: Cross multiply
    917,715.24x = 1,266,463.62 × 515,321.64
  4. Step 4: Simplify right side
    917,715.24x = 652,636,109,658.74
  5. Step 5: Solve for x
    x = 652,636,109,658.74/917,715.24
  6. Step 6: Final answer
    x = 711,153.18

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1.5x scale

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.