Home / 990,820.79-1,367,417.01-561,177.35

Finding the Fourth Proportional to 990,820.79, 1,367,417.01 and 561,177.35

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Solution

The fourth proportional to 990,820.79, 1,367,417.01 and 561,177.35 is: 774,472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,820.79 : 1,367,417.01 = 561,177.35 : x
  2. Step 2: Convert to fraction form
    990,820.79/1,367,417.01 = 561,177.35/x
  3. Step 3: Cross multiply
    990,820.79x = 1,367,417.01 × 561,177.35
  4. Step 4: Simplify right side
    990,820.79x = 767,363,444,373.75
  5. Step 5: Solve for x
    x = 767,363,444,373.75/990,820.79
  6. Step 6: Final answer
    x = 774,472.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.