Home / 830,147,314.90-1,145,610,917.28-472,909,797.08

Finding the Fourth Proportional to 830,147,314.90, 1,145,610,917.28 and 472,909,797.08

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Solution

The fourth proportional to 830,147,314.90, 1,145,610,917.28 and 472,909,797.08 is: 652,619,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,147,314.90 : 1,145,610,917.28 = 472,909,797.08 : x
  2. Step 2: Convert to fraction form
    830,147,314.90/1,145,610,917.28 = 472,909,797.08/x
  3. Step 3: Cross multiply
    830,147,314.90x = 1,145,610,917.28 × 472,909,797.08
  4. Step 4: Simplify right side
    830,147,314.90x = 541,770,626,423,517,440
  5. Step 5: Solve for x
    x = 541,770,626,423,517,440/830,147,314.90
  6. Step 6: Final answer
    x = 652,619,862.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.