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Finding the Fourth Proportional to 772,494.88, 1,064,708.88 and 513,909.28

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Solution

The fourth proportional to 772,494.88, 1,064,708.88 and 513,909.28 is: 708,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,494.88 : 1,064,708.88 = 513,909.28 : x
  2. Step 2: Convert to fraction form
    772,494.88/1,064,708.88 = 513,909.28/x
  3. Step 3: Cross multiply
    772,494.88x = 1,064,708.88 × 513,909.28
  4. Step 4: Simplify right side
    772,494.88x = 547,163,773,930.41
  5. Step 5: Solve for x
    x = 547,163,773,930.41/772,494.88
  6. Step 6: Final answer
    x = 708,307.31

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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.