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Finding the Fourth Proportional to 545,447, 752,331.20 and 472,718.32

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Solution

The fourth proportional to 545,447, 752,331.20 and 472,718.32 is: 652,017.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,447 : 752,331.20 = 472,718.32 : x
  2. Step 2: Convert to fraction form
    545,447/752,331.20 = 472,718.32/x
  3. Step 3: Cross multiply
    545,447x = 752,331.20 × 472,718.32
  4. Step 4: Simplify right side
    545,447x = 355,640,740,947.58
  5. Step 5: Solve for x
    x = 355,640,740,947.58/545,447
  6. Step 6: Final answer
    x = 652,017.04

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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.