Home / 1,315,663.59-1,815,645.58-772,191.35

Finding the Fourth Proportional to 1,315,663.59, 1,815,645.58 and 772,191.35

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Solution

The fourth proportional to 1,315,663.59, 1,815,645.58 and 772,191.35 is: 1,065,641.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,663.59 : 1,815,645.58 = 772,191.35 : x
  2. Step 2: Convert to fraction form
    1,315,663.59/1,815,645.58 = 772,191.35/x
  3. Step 3: Cross multiply
    1,315,663.59x = 1,815,645.58 × 772,191.35
  4. Step 4: Simplify right side
    1,315,663.59x = 1,402,025,812,448.20
  5. Step 5: Solve for x
    x = 1,402,025,812,448.20/1,315,663.59
  6. Step 6: Final answer
    x = 1,065,641.57

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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.