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Finding the Fourth Proportional to 517,956,726.80, 776,935,090.20 and 354,698,051.60

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Solution

The fourth proportional to 517,956,726.80, 776,935,090.20 and 354,698,051.60 is: 532,047,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,956,726.80 : 776,935,090.20 = 354,698,051.60 : x
  2. Step 2: Convert to fraction form
    517,956,726.80/776,935,090.20 = 354,698,051.60/x
  3. Step 3: Cross multiply
    517,956,726.80x = 776,935,090.20 × 354,698,051.60
  4. Step 4: Simplify right side
    517,956,726.80x = 275,577,362,713,610,304
  5. Step 5: Solve for x
    x = 275,577,362,713,610,304/517,956,726.80
  6. Step 6: Final answer
    x = 532,047,077.40

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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.