Home / 678,784.20-1,018,176.30-537,779.40

Finding the Fourth Proportional to 678,784.20, 1,018,176.30 and 537,779.40

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Solution

The fourth proportional to 678,784.20, 1,018,176.30 and 537,779.40 is: 806,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,784.20 : 1,018,176.30 = 537,779.40 : x
  2. Step 2: Convert to fraction form
    678,784.20/1,018,176.30 = 537,779.40/x
  3. Step 3: Cross multiply
    678,784.20x = 1,018,176.30 × 537,779.40
  4. Step 4: Simplify right side
    678,784.20x = 547,554,239,708.22
  5. Step 5: Solve for x
    x = 547,554,239,708.22/678,784.20
  6. Step 6: Final answer
    x = 806,669.10

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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.