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Finding the Fourth Proportional to 660,894.07, 912,030.65 and 374,413.48

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Solution

The fourth proportional to 660,894.07, 912,030.65 and 374,413.48 is: 516,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,894.07 : 912,030.65 = 374,413.48 : x
  2. Step 2: Convert to fraction form
    660,894.07/912,030.65 = 374,413.48/x
  3. Step 3: Cross multiply
    660,894.07x = 912,030.65 × 374,413.48
  4. Step 4: Simplify right side
    660,894.07x = 341,476,569,533.16
  5. Step 5: Solve for x
    x = 341,476,569,533.16/660,894.07
  6. Step 6: Final answer
    x = 516,688.81

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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.