Home / 691,827,421.20-954,743,256.36-378,574,838.16

Finding the Fourth Proportional to 691,827,421.20, 954,743,256.36 and 378,574,838.16

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Solution

The fourth proportional to 691,827,421.20, 954,743,256.36 and 378,574,838.16 is: 522,444,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,827,421.20 : 954,743,256.36 = 378,574,838.16 : x
  2. Step 2: Convert to fraction form
    691,827,421.20/954,743,256.36 = 378,574,838.16/x
  3. Step 3: Cross multiply
    691,827,421.20x = 954,743,256.36 × 378,574,838.16
  4. Step 4: Simplify right side
    691,827,421.20x = 361,441,773,760,838,400
  5. Step 5: Solve for x
    x = 361,441,773,760,838,400/691,827,421.20
  6. Step 6: Final answer
    x = 522,444,995.22

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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.