Home / 691,440.42-1,037,645.43-286,638.87

Finding the Fourth Proportional to 691,440.42, 1,037,645.43 and 286,638.87

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Solution

The fourth proportional to 691,440.42, 1,037,645.43 and 286,638.87 is: 430,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,440.42 : 1,037,645.43 = 286,638.87 : x
  2. Step 2: Convert to fraction form
    691,440.42/1,037,645.43 = 286,638.87/x
  3. Step 3: Cross multiply
    691,440.42x = 1,037,645.43 × 286,638.87
  4. Step 4: Simplify right side
    691,440.42x = 297,429,513,515.86
  5. Step 5: Solve for x
    x = 297,429,513,515.86/691,440.42
  6. Step 6: Final answer
    x = 430,159.28

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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.