Home / 636,612,702.48-878,525,394.12-354,349,056.51

Finding the Fourth Proportional to 636,612,702.48, 878,525,394.12 and 354,349,056.51

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Solution

The fourth proportional to 636,612,702.48, 878,525,394.12 and 354,349,056.51 is: 489,001,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,612,702.48 : 878,525,394.12 = 354,349,056.51 : x
  2. Step 2: Convert to fraction form
    636,612,702.48/878,525,394.12 = 354,349,056.51/x
  3. Step 3: Cross multiply
    636,612,702.48x = 878,525,394.12 × 354,349,056.51
  4. Step 4: Simplify right side
    636,612,702.48x = 311,304,644,526,497,920
  5. Step 5: Solve for x
    x = 311,304,644,526,497,920/636,612,702.48
  6. Step 6: Final answer
    x = 489,001,622.67

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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.