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Finding the Fourth Proportional to 722,856.55, 997,547.94 and 400,572.03

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Solution

The fourth proportional to 722,856.55, 997,547.94 and 400,572.03 is: 552,792.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,856.55 : 997,547.94 = 400,572.03 : x
  2. Step 2: Convert to fraction form
    722,856.55/997,547.94 = 400,572.03/x
  3. Step 3: Cross multiply
    722,856.55x = 997,547.94 × 400,572.03
  4. Step 4: Simplify right side
    722,856.55x = 399,589,798,360.38
  5. Step 5: Solve for x
    x = 399,589,798,360.38/722,856.55
  6. Step 6: Final answer
    x = 552,792.67

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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.