Home / 912,120,754.86-1,257,913,909.35-711,227,425.50

Finding the Fourth Proportional to 912,120,754.86, 1,257,913,909.35 and 711,227,425.50

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Solution

The fourth proportional to 912,120,754.86, 1,257,913,909.35 and 711,227,425.50 is: 980,860,118.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,120,754.86 : 1,257,913,909.35 = 711,227,425.50 : x
  2. Step 2: Convert to fraction form
    912,120,754.86/1,257,913,909.35 = 711,227,425.50/x
  3. Step 3: Cross multiply
    912,120,754.86x = 1,257,913,909.35 × 711,227,425.50
  4. Step 4: Simplify right side
    912,120,754.86x = 894,662,871,247,640,832
  5. Step 5: Solve for x
    x = 894,662,871,247,640,832/912,120,754.86
  6. Step 6: Final answer
    x = 980,860,118.01

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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.