Home / 1,087,656.40-1,631,484.60-686,123.20

Finding the Fourth Proportional to 1,087,656.40, 1,631,484.60 and 686,123.20

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Solution

The fourth proportional to 1,087,656.40, 1,631,484.60 and 686,123.20 is: 1,029,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,656.40 : 1,631,484.60 = 686,123.20 : x
  2. Step 2: Convert to fraction form
    1,087,656.40/1,631,484.60 = 686,123.20/x
  3. Step 3: Cross multiply
    1,087,656.40x = 1,631,484.60 × 686,123.20
  4. Step 4: Simplify right side
    1,087,656.40x = 1,119,399,434,502.72
  5. Step 5: Solve for x
    x = 1,119,399,434,502.72/1,087,656.40
  6. Step 6: Final answer
    x = 1,029,184.80

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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.