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Finding the Fourth Proportional to 520,140.52, 717,395.70 and 359,264.80

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Solution

The fourth proportional to 520,140.52, 717,395.70 and 359,264.80 is: 495,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,140.52 : 717,395.70 = 359,264.80 : x
  2. Step 2: Convert to fraction form
    520,140.52/717,395.70 = 359,264.80/x
  3. Step 3: Cross multiply
    520,140.52x = 717,395.70 × 359,264.80
  4. Step 4: Simplify right side
    520,140.52x = 257,735,022,681.36
  5. Step 5: Solve for x
    x = 257,735,022,681.36/520,140.52
  6. Step 6: Final answer
    x = 495,510.37

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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.