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Finding the Fourth Proportional to 722,547.57, 997,102.59 and 400,256.67

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Solution

The fourth proportional to 722,547.57, 997,102.59 and 400,256.67 is: 552,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,547.57 : 997,102.59 = 400,256.67 : x
  2. Step 2: Convert to fraction form
    722,547.57/997,102.59 = 400,256.67/x
  3. Step 3: Cross multiply
    722,547.57x = 997,102.59 × 400,256.67
  4. Step 4: Simplify right side
    722,547.57x = 399,096,962,321.78
  5. Step 5: Solve for x
    x = 399,096,962,321.78/722,547.57
  6. Step 6: Final answer
    x = 552,346.97

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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.