Home / 1,390,711.56-1,918,962.72-810,030.24

Finding the Fourth Proportional to 1,390,711.56, 1,918,962.72 and 810,030.24

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Solution

The fourth proportional to 1,390,711.56, 1,918,962.72 and 810,030.24 is: 1,117,714.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,711.56 : 1,918,962.72 = 810,030.24 : x
  2. Step 2: Convert to fraction form
    1,390,711.56/1,918,962.72 = 810,030.24/x
  3. Step 3: Cross multiply
    1,390,711.56x = 1,918,962.72 × 810,030.24
  4. Step 4: Simplify right side
    1,390,711.56x = 1,554,417,832,632.65
  5. Step 5: Solve for x
    x = 1,554,417,832,632.65/1,390,711.56
  6. Step 6: Final answer
    x = 1,117,714.04

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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.