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Finding the Fourth Proportional to 819,798,605.20, 1,229,697,907.80 and 740,720,184.40

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Solution

The fourth proportional to 819,798,605.20, 1,229,697,907.80 and 740,720,184.40 is: 1,111,080,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,798,605.20 : 1,229,697,907.80 = 740,720,184.40 : x
  2. Step 2: Convert to fraction form
    819,798,605.20/1,229,697,907.80 = 740,720,184.40/x
  3. Step 3: Cross multiply
    819,798,605.20x = 1,229,697,907.80 × 740,720,184.40
  4. Step 4: Simplify right side
    819,798,605.20x = 910,862,061,021,910,144
  5. Step 5: Solve for x
    x = 910,862,061,021,910,144/819,798,605.20
  6. Step 6: Final answer
    x = 1,111,080,276.60

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1.5x scale

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.