Home / 1,289,442,913.40-1,929,700,265.70-772,244,532.20

Finding the Fourth Proportional to 1,289,442,913.40, 1,929,700,265.70 and 772,244,532.20

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Solution

The fourth proportional to 1,289,442,913.40, 1,929,700,265.70 and 772,244,532.20 is: 1,155,693,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,442,913.40 : 1,929,700,265.70 = 772,244,532.20 : x
  2. Step 2: Convert to fraction form
    1,289,442,913.40/1,929,700,265.70 = 772,244,532.20/x
  3. Step 3: Cross multiply
    1,289,442,913.40x = 1,929,700,265.70 × 772,244,532.20
  4. Step 4: Simplify right side
    1,289,442,913.40x = 1,490,200,478,971,712,256
  5. Step 5: Solve for x
    x = 1,490,200,478,971,712,256/1,289,442,913.40
  6. Step 6: Final answer
    x = 1,155,693,255.97

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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.