Home / 722,715.12-997,354.80-400,430.34

Finding the Fourth Proportional to 722,715.12, 997,354.80 and 400,430.34

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Solution

The fourth proportional to 722,715.12, 997,354.80 and 400,430.34 is: 552,598.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,715.12 : 997,354.80 = 400,430.34 : x
  2. Step 2: Convert to fraction form
    722,715.12/997,354.80 = 400,430.34/x
  3. Step 3: Cross multiply
    722,715.12x = 997,354.80 × 400,430.34
  4. Step 4: Simplify right side
    722,715.12x = 399,371,121,664.63
  5. Step 5: Solve for x
    x = 399,371,121,664.63/722,715.12
  6. Step 6: Final answer
    x = 552,598.27

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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.