Home / 890,313,046.85-1,228,628,068.80-508,828,717.40

Finding the Fourth Proportional to 890,313,046.85, 1,228,628,068.80 and 508,828,717.40

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Solution

The fourth proportional to 890,313,046.85, 1,228,628,068.80 and 508,828,717.40 is: 702,181,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,313,046.85 : 1,228,628,068.80 = 508,828,717.40 : x
  2. Step 2: Convert to fraction form
    890,313,046.85/1,228,628,068.80 = 508,828,717.40/x
  3. Step 3: Cross multiply
    890,313,046.85x = 1,228,628,068.80 × 508,828,717.40
  4. Step 4: Simplify right side
    890,313,046.85x = 625,161,244,402,999,808
  5. Step 5: Solve for x
    x = 625,161,244,402,999,808/890,313,046.85
  6. Step 6: Final answer
    x = 702,181,380.60

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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.