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Finding the Fourth Proportional to 704,993.93, 972,897.33 and 390,671.02

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Solution

The fourth proportional to 704,993.93, 972,897.33 and 390,671.02 is: 539,129.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,993.93 : 972,897.33 = 390,671.02 : x
  2. Step 2: Convert to fraction form
    704,993.93/972,897.33 = 390,671.02/x
  3. Step 3: Cross multiply
    704,993.93x = 972,897.33 × 390,671.02
  4. Step 4: Simplify right side
    704,993.93x = 380,082,792,266.38
  5. Step 5: Solve for x
    x = 380,082,792,266.38/704,993.93
  6. Step 6: Final answer
    x = 539,129.17

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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.