Home / 642,931.79-887,066.25-506,542.37

Finding the Fourth Proportional to 642,931.79, 887,066.25 and 506,542.37

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Solution

The fourth proportional to 642,931.79, 887,066.25 and 506,542.37 is: 698,886.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,931.79 : 887,066.25 = 506,542.37 : x
  2. Step 2: Convert to fraction form
    642,931.79/887,066.25 = 506,542.37/x
  3. Step 3: Cross multiply
    642,931.79x = 887,066.25 × 506,542.37
  4. Step 4: Simplify right side
    642,931.79x = 449,336,640,622.01
  5. Step 5: Solve for x
    x = 449,336,640,622.01/642,931.79
  6. Step 6: Final answer
    x = 698,886.95

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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.