Home / 825,703,000.40-1,238,554,500.60-458,370,981.20

Finding the Fourth Proportional to 825,703,000.40, 1,238,554,500.60 and 458,370,981.20

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Solution

The fourth proportional to 825,703,000.40, 1,238,554,500.60 and 458,370,981.20 is: 687,556,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,703,000.40 : 1,238,554,500.60 = 458,370,981.20 : x
  2. Step 2: Convert to fraction form
    825,703,000.40/1,238,554,500.60 = 458,370,981.20/x
  3. Step 3: Cross multiply
    825,703,000.40x = 1,238,554,500.60 × 458,370,981.20
  4. Step 4: Simplify right side
    825,703,000.40x = 567,717,441,709,697,920
  5. Step 5: Solve for x
    x = 567,717,441,709,697,920/825,703,000.40
  6. Step 6: Final answer
    x = 687,556,471.80

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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.