Home / 717,776,920.80-1,076,665,381.20-391,259,570.40

Finding the Fourth Proportional to 717,776,920.80, 1,076,665,381.20 and 391,259,570.40

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Solution

The fourth proportional to 717,776,920.80, 1,076,665,381.20 and 391,259,570.40 is: 586,889,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,776,920.80 : 1,076,665,381.20 = 391,259,570.40 : x
  2. Step 2: Convert to fraction form
    717,776,920.80/1,076,665,381.20 = 391,259,570.40/x
  3. Step 3: Cross multiply
    717,776,920.80x = 1,076,665,381.20 × 391,259,570.40
  4. Step 4: Simplify right side
    717,776,920.80x = 421,255,634,512,864,256
  5. Step 5: Solve for x
    x = 421,255,634,512,864,256/717,776,920.80
  6. Step 6: Final answer
    x = 586,889,355.60

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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.