Home / 781,488,086.40-1,172,232,129.60-490,683,571.20

Finding the Fourth Proportional to 781,488,086.40, 1,172,232,129.60 and 490,683,571.20

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Solution

The fourth proportional to 781,488,086.40, 1,172,232,129.60 and 490,683,571.20 is: 736,025,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,488,086.40 : 1,172,232,129.60 = 490,683,571.20 : x
  2. Step 2: Convert to fraction form
    781,488,086.40/1,172,232,129.60 = 490,683,571.20/x
  3. Step 3: Cross multiply
    781,488,086.40x = 1,172,232,129.60 × 490,683,571.20
  4. Step 4: Simplify right side
    781,488,086.40x = 575,195,047,627,509,184
  5. Step 5: Solve for x
    x = 575,195,047,627,509,184/781,488,086.40
  6. Step 6: Final answer
    x = 736,025,356.80

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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.