Home / 722,916.90-997,631.10-400,632.21

Finding the Fourth Proportional to 722,916.90, 997,631.10 and 400,632.21

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Solution

The fourth proportional to 722,916.90, 997,631.10 and 400,632.21 is: 552,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,916.90 : 997,631.10 = 400,632.21 : x
  2. Step 2: Convert to fraction form
    722,916.90/997,631.10 = 400,632.21/x
  3. Step 3: Cross multiply
    722,916.90x = 997,631.10 × 400,632.21
  4. Step 4: Simplify right side
    722,916.90x = 399,683,152,357.73
  5. Step 5: Solve for x
    x = 399,683,152,357.73/722,916.90
  6. Step 6: Final answer
    x = 552,875.65

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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.