Home / 864,570.11-1,296,827.48-391,255.45

Finding the Fourth Proportional to 864,570.11, 1,296,827.48 and 391,255.45

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Solution

The fourth proportional to 864,570.11, 1,296,827.48 and 391,255.45 is: 586,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,570.11 : 1,296,827.48 = 391,255.45 : x
  2. Step 2: Convert to fraction form
    864,570.11/1,296,827.48 = 391,255.45/x
  3. Step 3: Cross multiply
    864,570.11x = 1,296,827.48 × 391,255.45
  4. Step 4: Simplify right side
    864,570.11x = 507,390,816,995.84
  5. Step 5: Solve for x
    x = 507,390,816,995.84/864,570.11
  6. Step 6: Final answer
    x = 586,870.65

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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.