Home / 690,607,319.40-1,035,910,979.10-472,929,085.80

Finding the Fourth Proportional to 690,607,319.40, 1,035,910,979.10 and 472,929,085.80

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Solution

The fourth proportional to 690,607,319.40, 1,035,910,979.10 and 472,929,085.80 is: 709,393,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,607,319.40 : 1,035,910,979.10 = 472,929,085.80 : x
  2. Step 2: Convert to fraction form
    690,607,319.40/1,035,910,979.10 = 472,929,085.80/x
  3. Step 3: Cross multiply
    690,607,319.40x = 1,035,910,979.10 × 472,929,085.80
  4. Step 4: Simplify right side
    690,607,319.40x = 489,912,432,315,945,920
  5. Step 5: Solve for x
    x = 489,912,432,315,945,920/690,607,319.40
  6. Step 6: Final answer
    x = 709,393,628.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.