Home / 803,981,026.40-1,205,971,539.60-319,306,834.40

Finding the Fourth Proportional to 803,981,026.40, 1,205,971,539.60 and 319,306,834.40

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Solution

The fourth proportional to 803,981,026.40, 1,205,971,539.60 and 319,306,834.40 is: 478,960,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,981,026.40 : 1,205,971,539.60 = 319,306,834.40 : x
  2. Step 2: Convert to fraction form
    803,981,026.40/1,205,971,539.60 = 319,306,834.40/x
  3. Step 3: Cross multiply
    803,981,026.40x = 1,205,971,539.60 × 319,306,834.40
  4. Step 4: Simplify right side
    803,981,026.40x = 385,074,954,686,170,176
  5. Step 5: Solve for x
    x = 385,074,954,686,170,176/803,981,026.40
  6. Step 6: Final answer
    x = 478,960,251.60

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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.