Home / 1,289,442,938.40-1,929,700,303.20-772,244,557.20

Finding the Fourth Proportional to 1,289,442,938.40, 1,929,700,303.20 and 772,244,557.20

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Solution

The fourth proportional to 1,289,442,938.40, 1,929,700,303.20 and 772,244,557.20 is: 1,155,693,293.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,442,938.40 : 1,929,700,303.20 = 772,244,557.20 : x
  2. Step 2: Convert to fraction form
    1,289,442,938.40/1,929,700,303.20 = 772,244,557.20/x
  3. Step 3: Cross multiply
    1,289,442,938.40x = 1,929,700,303.20 × 772,244,557.20
  4. Step 4: Simplify right side
    1,289,442,938.40x = 1,490,200,556,173,389,824
  5. Step 5: Solve for x
    x = 1,490,200,556,173,389,824/1,289,442,938.40
  6. Step 6: Final answer
    x = 1,155,693,293.43

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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.