Home / 891,130.80-1,338,008.40-691,676.40

Finding the Fourth Proportional to 891,130.80, 1,338,008.40 and 691,676.40

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Solution

The fourth proportional to 891,130.80, 1,338,008.40 and 691,676.40 is: 1,038,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,130.80 : 1,338,008.40 = 691,676.40 : x
  2. Step 2: Convert to fraction form
    891,130.80/1,338,008.40 = 691,676.40/x
  3. Step 3: Cross multiply
    891,130.80x = 1,338,008.40 × 691,676.40
  4. Step 4: Simplify right side
    891,130.80x = 925,468,833,281.76
  5. Step 5: Solve for x
    x = 925,468,833,281.76/891,130.80
  6. Step 6: Final answer
    x = 1,038,533.10

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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.