Home / 1,218,032,633.40-1,680,840,024.93-661,103,723.04

Finding the Fourth Proportional to 1,218,032,633.40, 1,680,840,024.93 and 661,103,723.04

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Solution

The fourth proportional to 1,218,032,633.40, 1,680,840,024.93 and 661,103,723.04 is: 912,298,708.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,633.40 : 1,680,840,024.93 = 661,103,723.04 : x
  2. Step 2: Convert to fraction form
    1,218,032,633.40/1,680,840,024.93 = 661,103,723.04/x
  3. Step 3: Cross multiply
    1,218,032,633.40x = 1,680,840,024.93 × 661,103,723.04
  4. Step 4: Simplify right side
    1,218,032,633.40x = 1,111,209,598,315,869,440
  5. Step 5: Solve for x
    x = 1,111,209,598,315,869,440/1,218,032,633.40
  6. Step 6: Final answer
    x = 912,298,708.46

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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.