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Finding the Fourth Proportional to 887,655.80, 1,329,952.80 and 413,368.40

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Solution

The fourth proportional to 887,655.80, 1,329,952.80 and 413,368.40 is: 619,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,655.80 : 1,329,952.80 = 413,368.40 : x
  2. Step 2: Convert to fraction form
    887,655.80/1,329,952.80 = 413,368.40/x
  3. Step 3: Cross multiply
    887,655.80x = 1,329,952.80 × 413,368.40
  4. Step 4: Simplify right side
    887,655.80x = 549,760,461,011.52
  5. Step 5: Solve for x
    x = 549,760,461,011.52/887,655.80
  6. Step 6: Final answer
    x = 619,339.68

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1.5x scale

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.