Home / 1,315,266.90-1,971,916.20-716,903.70

Finding the Fourth Proportional to 1,315,266.90, 1,971,916.20 and 716,903.70

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Solution

The fourth proportional to 1,315,266.90, 1,971,916.20 and 716,903.70 is: 1,074,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,266.90 : 1,971,916.20 = 716,903.70 : x
  2. Step 2: Convert to fraction form
    1,315,266.90/1,971,916.20 = 716,903.70/x
  3. Step 3: Cross multiply
    1,315,266.90x = 1,971,916.20 × 716,903.70
  4. Step 4: Simplify right side
    1,315,266.90x = 1,413,674,019,869.94
  5. Step 5: Solve for x
    x = 1,413,674,019,869.94/1,315,266.90
  6. Step 6: Final answer
    x = 1,074,819.13

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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.