Home / 1,645,185,812.40-2,466,343,827.90-990,397,356.30

Finding the Fourth Proportional to 1,645,185,812.40, 2,466,343,827.90 and 990,397,356.30

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Solution

The fourth proportional to 1,645,185,812.40, 2,466,343,827.90 and 990,397,356.30 is: 1,484,732,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,185,812.40 : 2,466,343,827.90 = 990,397,356.30 : x
  2. Step 2: Convert to fraction form
    1,645,185,812.40/2,466,343,827.90 = 990,397,356.30/x
  3. Step 3: Cross multiply
    1,645,185,812.40x = 2,466,343,827.90 × 990,397,356.30
  4. Step 4: Simplify right side
    1,645,185,812.40x = 2,442,660,406,878,982,144
  5. Step 5: Solve for x
    x = 2,442,660,406,878,982,144/1,645,185,812.40
  6. Step 6: Final answer
    x = 1,484,732,234.18

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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.