Home / 612,130.23-919,636.11-578,142.45

Finding the Fourth Proportional to 612,130.23, 919,636.11 and 578,142.45

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Solution

The fourth proportional to 612,130.23, 919,636.11 and 578,142.45 is: 868,574.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,130.23 : 919,636.11 = 578,142.45 : x
  2. Step 2: Convert to fraction form
    612,130.23/919,636.11 = 578,142.45/x
  3. Step 3: Cross multiply
    612,130.23x = 919,636.11 × 578,142.45
  4. Step 4: Simplify right side
    612,130.23x = 531,680,673,743.87
  5. Step 5: Solve for x
    x = 531,680,673,743.87/612,130.23
  6. Step 6: Final answer
    x = 868,574.44

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1.5x scale

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.