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Finding the Fourth Proportional to 476,534.79, 718,148.93 and 429,209.19

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Solution

The fourth proportional to 476,534.79, 718,148.93 and 429,209.19 is: 646,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,534.79 : 718,148.93 = 429,209.19 : x
  2. Step 2: Convert to fraction form
    476,534.79/718,148.93 = 429,209.19/x
  3. Step 3: Cross multiply
    476,534.79x = 718,148.93 × 429,209.19
  4. Step 4: Simplify right side
    476,534.79x = 308,236,121,617.69
  5. Step 5: Solve for x
    x = 308,236,121,617.69/476,534.79
  6. Step 6: Final answer
    x = 646,828.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.