Home / 978,810.76-1,350,456.13-570,623.67

Finding the Fourth Proportional to 978,810.76, 1,350,456.13 and 570,623.67

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Solution

The fourth proportional to 978,810.76, 1,350,456.13 and 570,623.67 is: 787,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,810.76 : 1,350,456.13 = 570,623.67 : x
  2. Step 2: Convert to fraction form
    978,810.76/1,350,456.13 = 570,623.67/x
  3. Step 3: Cross multiply
    978,810.76x = 1,350,456.13 × 570,623.67
  4. Step 4: Simplify right side
    978,810.76x = 770,602,233,074.60
  5. Step 5: Solve for x
    x = 770,602,233,074.60/978,810.76
  6. Step 6: Final answer
    x = 787,284.19

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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.