Home / 1,223,919,677.80-1,688,959,902.18-666,990,699.40

Finding the Fourth Proportional to 1,223,919,677.80, 1,688,959,902.18 and 666,990,699.40

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Solution

The fourth proportional to 1,223,919,677.80, 1,688,959,902.18 and 666,990,699.40 is: 920,420,324.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,919,677.80 : 1,688,959,902.18 = 666,990,699.40 : x
  2. Step 2: Convert to fraction form
    1,223,919,677.80/1,688,959,902.18 = 666,990,699.40/x
  3. Step 3: Cross multiply
    1,223,919,677.80x = 1,688,959,902.18 × 666,990,699.40
  4. Step 4: Simplify right side
    1,223,919,677.80x = 1,126,520,546,413,593,728
  5. Step 5: Solve for x
    x = 1,126,520,546,413,593,728/1,223,919,677.80
  6. Step 6: Final answer
    x = 920,420,324.02

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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.