Home / 1,121,045.72-1,547,075.78-611,780.90

Finding the Fourth Proportional to 1,121,045.72, 1,547,075.78 and 611,780.90

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Solution

The fourth proportional to 1,121,045.72, 1,547,075.78 and 611,780.90 is: 844,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,045.72 : 1,547,075.78 = 611,780.90 : x
  2. Step 2: Convert to fraction form
    1,121,045.72/1,547,075.78 = 611,780.90/x
  3. Step 3: Cross multiply
    1,121,045.72x = 1,547,075.78 × 611,780.90
  4. Step 4: Simplify right side
    1,121,045.72x = 946,471,413,056.60
  5. Step 5: Solve for x
    x = 946,471,413,056.60/1,121,045.72
  6. Step 6: Final answer
    x = 844,275.48

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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.