Home / 700,487,729.48-1,050,996,969.59-420,564,126.22

Finding the Fourth Proportional to 700,487,729.48, 1,050,996,969.59 and 420,564,126.22

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Solution

The fourth proportional to 700,487,729.48, 1,050,996,969.59 and 420,564,126.22 is: 631,005,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,487,729.48 : 1,050,996,969.59 = 420,564,126.22 : x
  2. Step 2: Convert to fraction form
    700,487,729.48/1,050,996,969.59 = 420,564,126.22/x
  3. Step 3: Cross multiply
    700,487,729.48x = 1,050,996,969.59 × 420,564,126.22
  4. Step 4: Simplify right side
    700,487,729.48x = 442,011,622,174,287,552
  5. Step 5: Solve for x
    x = 442,011,622,174,287,552/700,487,729.48
  6. Step 6: Final answer
    x = 631,005,517.40

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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.