Home / 876,984,359.65-1,209,940,477.16-500,370,391.24

Finding the Fourth Proportional to 876,984,359.65, 1,209,940,477.16 and 500,370,391.24

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Solution

The fourth proportional to 876,984,359.65, 1,209,940,477.16 and 500,370,391.24 is: 690,341,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,984,359.65 : 1,209,940,477.16 = 500,370,391.24 : x
  2. Step 2: Convert to fraction form
    876,984,359.65/1,209,940,477.16 = 500,370,391.24/x
  3. Step 3: Cross multiply
    876,984,359.65x = 1,209,940,477.16 × 500,370,391.24
  4. Step 4: Simplify right side
    876,984,359.65x = 605,418,389,928,134,784
  5. Step 5: Solve for x
    x = 605,418,389,928,134,784/876,984,359.65
  6. Step 6: Final answer
    x = 690,341,148.35

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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.