Home / 891,442.90-1,230,275.19-509,395.42

Finding the Fourth Proportional to 891,442.90, 1,230,275.19 and 509,395.42

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Solution

The fourth proportional to 891,442.90, 1,230,275.19 and 509,395.42 is: 703,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,442.90 : 1,230,275.19 = 509,395.42 : x
  2. Step 2: Convert to fraction form
    891,442.90/1,230,275.19 = 509,395.42/x
  3. Step 3: Cross multiply
    891,442.90x = 1,230,275.19 × 509,395.42
  4. Step 4: Simplify right side
    891,442.90x = 626,696,547,125.63
  5. Step 5: Solve for x
    x = 626,696,547,125.63/891,442.90
  6. Step 6: Final answer
    x = 703,013.67

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Double scale
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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.