Home / 871,015.80-1,308,078.90-634,625.40

Finding the Fourth Proportional to 871,015.80, 1,308,078.90 and 634,625.40

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Solution

The fourth proportional to 871,015.80, 1,308,078.90 and 634,625.40 is: 953,071.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,015.80 : 1,308,078.90 = 634,625.40 : x
  2. Step 2: Convert to fraction form
    871,015.80/1,308,078.90 = 634,625.40/x
  3. Step 3: Cross multiply
    871,015.80x = 1,308,078.90 × 634,625.40
  4. Step 4: Simplify right side
    871,015.80x = 830,140,095,144.06
  5. Step 5: Solve for x
    x = 830,140,095,144.06/871,015.80
  6. Step 6: Final answer
    x = 953,071.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.