Home / 908,117.10-1,365,128.10-643,708.80

Finding the Fourth Proportional to 908,117.10, 1,365,128.10 and 643,708.80

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Solution

The fourth proportional to 908,117.10, 1,365,128.10 and 643,708.80 is: 967,656.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,117.10 : 1,365,128.10 = 643,708.80 : x
  2. Step 2: Convert to fraction form
    908,117.10/1,365,128.10 = 643,708.80/x
  3. Step 3: Cross multiply
    908,117.10x = 1,365,128.10 × 643,708.80
  4. Step 4: Simplify right side
    908,117.10x = 878,744,971,097.28
  5. Step 5: Solve for x
    x = 878,744,971,097.28/908,117.10
  6. Step 6: Final answer
    x = 967,656.01

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1.5x scale

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.