Home / 920,392,411.28-1,270,104,831.50-518,496,798.04

Finding the Fourth Proportional to 920,392,411.28, 1,270,104,831.50 and 518,496,798.04

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Solution

The fourth proportional to 920,392,411.28, 1,270,104,831.50 and 518,496,798.04 is: 715,504,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,392,411.28 : 1,270,104,831.50 = 518,496,798.04 : x
  2. Step 2: Convert to fraction form
    920,392,411.28/1,270,104,831.50 = 518,496,798.04/x
  3. Step 3: Cross multiply
    920,392,411.28x = 1,270,104,831.50 × 518,496,798.04
  4. Step 4: Simplify right side
    920,392,411.28x = 658,545,288,302,115,968
  5. Step 5: Solve for x
    x = 658,545,288,302,115,968/920,392,411.28
  6. Step 6: Final answer
    x = 715,504,908.81

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Double scale
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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.