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Finding the Fourth Proportional to 400,788,005.40, 601,182,008.10 and 400,788,005.40

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Solution

The fourth proportional to 400,788,005.40, 601,182,008.10 and 400,788,005.40 is: 601,182,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,788,005.40 : 601,182,008.10 = 400,788,005.40 : x
  2. Step 2: Convert to fraction form
    400,788,005.40/601,182,008.10 = 400,788,005.40/x
  3. Step 3: Cross multiply
    400,788,005.40x = 601,182,008.10 × 400,788,005.40
  4. Step 4: Simplify right side
    400,788,005.40x = 240,946,537,908,765,632
  5. Step 5: Solve for x
    x = 240,946,537,908,765,632/400,788,005.40
  6. Step 6: Final answer
    x = 601,182,008.10

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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.