Home / 715,831.67-987,518.55-634,243.13

Finding the Fourth Proportional to 715,831.67, 987,518.55 and 634,243.13

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Solution

The fourth proportional to 715,831.67, 987,518.55 and 634,243.13 is: 874,963.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,831.67 : 987,518.55 = 634,243.13 : x
  2. Step 2: Convert to fraction form
    715,831.67/987,518.55 = 634,243.13/x
  3. Step 3: Cross multiply
    715,831.67x = 987,518.55 × 634,243.13
  4. Step 4: Simplify right side
    715,831.67x = 626,326,858,553.86
  5. Step 5: Solve for x
    x = 626,326,858,553.86/715,831.67
  6. Step 6: Final answer
    x = 874,963.89

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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.