Home / 686,806.48-947,823.56-380,862.36

Finding the Fourth Proportional to 686,806.48, 947,823.56 and 380,862.36

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Solution

The fourth proportional to 686,806.48, 947,823.56 and 380,862.36 is: 525,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,806.48 : 947,823.56 = 380,862.36 : x
  2. Step 2: Convert to fraction form
    686,806.48/947,823.56 = 380,862.36/x
  3. Step 3: Cross multiply
    686,806.48x = 947,823.56 × 380,862.36
  4. Step 4: Simplify right side
    686,806.48x = 360,990,317,925.20
  5. Step 5: Solve for x
    x = 360,990,317,925.20/686,806.48
  6. Step 6: Final answer
    x = 525,607.04

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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.