Home / 1,220,170,842.30-1,683,836,847.42-663,253,889.40

Finding the Fourth Proportional to 1,220,170,842.30, 1,683,836,847.42 and 663,253,889.40

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Solution

The fourth proportional to 1,220,170,842.30, 1,683,836,847.42 and 663,253,889.40 is: 915,290,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,170,842.30 : 1,683,836,847.42 = 663,253,889.40 : x
  2. Step 2: Convert to fraction form
    1,220,170,842.30/1,683,836,847.42 = 663,253,889.40/x
  3. Step 3: Cross multiply
    1,220,170,842.30x = 1,683,836,847.42 × 663,253,889.40
  4. Step 4: Simplify right side
    1,220,170,842.30x = 1,116,811,338,166,349,312
  5. Step 5: Solve for x
    x = 1,116,811,338,166,349,312/1,220,170,842.30
  6. Step 6: Final answer
    x = 915,290,957.18

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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.