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Finding the Fourth Proportional to 571,816.72, 786,789.48 and 469,465.12

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Solution

The fourth proportional to 571,816.72, 786,789.48 and 469,465.12 is: 645,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,816.72 : 786,789.48 = 469,465.12 : x
  2. Step 2: Convert to fraction form
    571,816.72/786,789.48 = 469,465.12/x
  3. Step 3: Cross multiply
    571,816.72x = 786,789.48 × 469,465.12
  4. Step 4: Simplify right side
    571,816.72x = 369,370,217,642.94
  5. Step 5: Solve for x
    x = 369,370,217,642.94/571,816.72
  6. Step 6: Final answer
    x = 645,959.11

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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.