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Finding the Fourth Proportional to 852,984,008.40, 1,279,476,012.60 and 715,234,501.20

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Solution

The fourth proportional to 852,984,008.40, 1,279,476,012.60 and 715,234,501.20 is: 1,072,851,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,984,008.40 : 1,279,476,012.60 = 715,234,501.20 : x
  2. Step 2: Convert to fraction form
    852,984,008.40/1,279,476,012.60 = 715,234,501.20/x
  3. Step 3: Cross multiply
    852,984,008.40x = 1,279,476,012.60 × 715,234,501.20
  4. Step 4: Simplify right side
    852,984,008.40x = 915,125,387,669,325,952
  5. Step 5: Solve for x
    x = 915,125,387,669,325,952/852,984,008.40
  6. Step 6: Final answer
    x = 1,072,851,751.80

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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.