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Finding the Fourth Proportional to 710,454.47, 980,441.27 and 388,184.55

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Solution

The fourth proportional to 710,454.47, 980,441.27 and 388,184.55 is: 535,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,454.47 : 980,441.27 = 388,184.55 : x
  2. Step 2: Convert to fraction form
    710,454.47/980,441.27 = 388,184.55/x
  3. Step 3: Cross multiply
    710,454.47x = 980,441.27 × 388,184.55
  4. Step 4: Simplify right side
    710,454.47x = 380,592,151,255.46
  5. Step 5: Solve for x
    x = 380,592,151,255.46/710,454.47
  6. Step 6: Final answer
    x = 535,702.38

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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.