Home / 717,123,432.51-989,632,386.18-415,767,308.94

Finding the Fourth Proportional to 717,123,432.51, 989,632,386.18 and 415,767,308.94

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Solution

The fourth proportional to 717,123,432.51, 989,632,386.18 and 415,767,308.94 is: 573,760,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,123,432.51 : 989,632,386.18 = 415,767,308.94 : x
  2. Step 2: Convert to fraction form
    717,123,432.51/989,632,386.18 = 415,767,308.94/x
  3. Step 3: Cross multiply
    717,123,432.51x = 989,632,386.18 × 415,767,308.94
  4. Step 4: Simplify right side
    717,123,432.51x = 411,456,794,041,929,408
  5. Step 5: Solve for x
    x = 411,456,794,041,929,408/717,123,432.51
  6. Step 6: Final answer
    x = 573,760,074.47

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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.