Home / 513,838.40-770,296.80-457,851.20

Finding the Fourth Proportional to 513,838.40, 770,296.80 and 457,851.20

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Solution

The fourth proportional to 513,838.40, 770,296.80 and 457,851.20 is: 686,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,838.40 : 770,296.80 = 457,851.20 : x
  2. Step 2: Convert to fraction form
    513,838.40/770,296.80 = 457,851.20/x
  3. Step 3: Cross multiply
    513,838.40x = 770,296.80 × 457,851.20
  4. Step 4: Simplify right side
    513,838.40x = 352,681,314,236.16
  5. Step 5: Solve for x
    x = 352,681,314,236.16/513,838.40
  6. Step 6: Final answer
    x = 686,366.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.