Home / 1,288,335.28-1,778,066.68-779,041.28

Finding the Fourth Proportional to 1,288,335.28, 1,778,066.68 and 779,041.28

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Solution

The fourth proportional to 1,288,335.28, 1,778,066.68 and 779,041.28 is: 1,075,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,335.28 : 1,778,066.68 = 779,041.28 : x
  2. Step 2: Convert to fraction form
    1,288,335.28/1,778,066.68 = 779,041.28/x
  3. Step 3: Cross multiply
    1,288,335.28x = 1,778,066.68 × 779,041.28
  4. Step 4: Simplify right side
    1,288,335.28x = 1,385,187,342,312.55
  5. Step 5: Solve for x
    x = 1,385,187,342,312.55/1,288,335.28
  6. Step 6: Final answer
    x = 1,075,176.13

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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.