Home / 707,928.04-977,040.66-402,080.68

Finding the Fourth Proportional to 707,928.04, 977,040.66 and 402,080.68

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Solution

The fourth proportional to 707,928.04, 977,040.66 and 402,080.68 is: 554,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,928.04 : 977,040.66 = 402,080.68 : x
  2. Step 2: Convert to fraction form
    707,928.04/977,040.66 = 402,080.68/x
  3. Step 3: Cross multiply
    707,928.04x = 977,040.66 × 402,080.68
  4. Step 4: Simplify right side
    707,928.04x = 392,849,172,960.45
  5. Step 5: Solve for x
    x = 392,849,172,960.45/707,928.04
  6. Step 6: Final answer
    x = 554,928.12

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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.