Home / 688,051.70-1,032,077.55-520,090.10

Finding the Fourth Proportional to 688,051.70, 1,032,077.55 and 520,090.10

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Solution

The fourth proportional to 688,051.70, 1,032,077.55 and 520,090.10 is: 780,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,051.70 : 1,032,077.55 = 520,090.10 : x
  2. Step 2: Convert to fraction form
    688,051.70/1,032,077.55 = 520,090.10/x
  3. Step 3: Cross multiply
    688,051.70x = 1,032,077.55 × 520,090.10
  4. Step 4: Simplify right side
    688,051.70x = 536,773,316,187.26
  5. Step 5: Solve for x
    x = 536,773,316,187.26/688,051.70
  6. Step 6: Final answer
    x = 780,135.15

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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.