Home / 720,763,050.17-994,660,838.04-423,417,824.87

Finding the Fourth Proportional to 720,763,050.17, 994,660,838.04 and 423,417,824.87

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Solution

The fourth proportional to 720,763,050.17, 994,660,838.04 and 423,417,824.87 is: 584,321,197.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,763,050.17 : 994,660,838.04 = 423,417,824.87 : x
  2. Step 2: Convert to fraction form
    720,763,050.17/994,660,838.04 = 423,417,824.87/x
  3. Step 3: Cross multiply
    720,763,050.17x = 994,660,838.04 × 423,417,824.87
  4. Step 4: Simplify right side
    720,763,050.17x = 421,157,128,521,294,848
  5. Step 5: Solve for x
    x = 421,157,128,521,294,848/720,763,050.17
  6. Step 6: Final answer
    x = 584,321,197.41

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1.5x scale

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.