Home / 722,985.05-997,719.45-400,715.94

Finding the Fourth Proportional to 722,985.05, 997,719.45 and 400,715.94

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Solution

The fourth proportional to 722,985.05, 997,719.45 and 400,715.94 is: 552,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,985.05 : 997,719.45 = 400,715.94 : x
  2. Step 2: Convert to fraction form
    722,985.05/997,719.45 = 400,715.94/x
  3. Step 3: Cross multiply
    722,985.05x = 997,719.45 × 400,715.94
  4. Step 4: Simplify right side
    722,985.05x = 399,802,087,263.03
  5. Step 5: Solve for x
    x = 399,802,087,263.03/722,985.05
  6. Step 6: Final answer
    x = 552,988.05

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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.