Home / 891,681.21-1,230,541.34-509,743.53

Finding the Fourth Proportional to 891,681.21, 1,230,541.34 and 509,743.53

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Solution

The fourth proportional to 891,681.21, 1,230,541.34 and 509,743.53 is: 703,458.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,681.21 : 1,230,541.34 = 509,743.53 : x
  2. Step 2: Convert to fraction form
    891,681.21/1,230,541.34 = 509,743.53/x
  3. Step 3: Cross multiply
    891,681.21x = 1,230,541.34 × 509,743.53
  4. Step 4: Simplify right side
    891,681.21x = 627,260,483,913.81
  5. Step 5: Solve for x
    x = 627,260,483,913.81/891,681.21
  6. Step 6: Final answer
    x = 703,458.23

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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.