Home / 713,885.79-1,070,296.05-429,509.72

Finding the Fourth Proportional to 713,885.79, 1,070,296.05 and 429,509.72

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Solution

The fourth proportional to 713,885.79, 1,070,296.05 and 429,509.72 is: 643,944.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,885.79 : 1,070,296.05 = 429,509.72 : x
  2. Step 2: Convert to fraction form
    713,885.79/1,070,296.05 = 429,509.72/x
  3. Step 3: Cross multiply
    713,885.79x = 1,070,296.05 × 429,509.72
  4. Step 4: Simplify right side
    713,885.79x = 459,702,551,401.13
  5. Step 5: Solve for x
    x = 459,702,551,401.13/713,885.79
  6. Step 6: Final answer
    x = 643,944.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.