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Finding the Fourth Proportional to 716,480.56, 988,707 and 429,943.60

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Solution

The fourth proportional to 716,480.56, 988,707 and 429,943.60 is: 593,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,480.56 : 988,707 = 429,943.60 : x
  2. Step 2: Convert to fraction form
    716,480.56/988,707 = 429,943.60/x
  3. Step 3: Cross multiply
    716,480.56x = 988,707 × 429,943.60
  4. Step 4: Simplify right side
    716,480.56x = 425,088,246,925.20
  5. Step 5: Solve for x
    x = 425,088,246,925.20/716,480.56
  6. Step 6: Final answer
    x = 593,300.46

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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.