Home / 686,158.80-1,029,821.40-553,189.20

Finding the Fourth Proportional to 686,158.80, 1,029,821.40 and 553,189.20

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Solution

The fourth proportional to 686,158.80, 1,029,821.40 and 553,189.20 is: 830,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,158.80 : 1,029,821.40 = 553,189.20 : x
  2. Step 2: Convert to fraction form
    686,158.80/1,029,821.40 = 553,189.20/x
  3. Step 3: Cross multiply
    686,158.80x = 1,029,821.40 × 553,189.20
  4. Step 4: Simplify right side
    686,158.80x = 569,686,076,408.88
  5. Step 5: Solve for x
    x = 569,686,076,408.88/686,158.80
  6. Step 6: Final answer
    x = 830,253.98

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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.