Home / 879,129.64-1,213,225.32-497,148.76

Finding the Fourth Proportional to 879,129.64, 1,213,225.32 and 497,148.76

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Solution

The fourth proportional to 879,129.64, 1,213,225.32 and 497,148.76 is: 686,080.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,129.64 : 1,213,225.32 = 497,148.76 : x
  2. Step 2: Convert to fraction form
    879,129.64/1,213,225.32 = 497,148.76/x
  3. Step 3: Cross multiply
    879,129.64x = 1,213,225.32 × 497,148.76
  4. Step 4: Simplify right side
    879,129.64x = 603,153,463,438.60
  5. Step 5: Solve for x
    x = 603,153,463,438.60/879,129.64
  6. Step 6: Final answer
    x = 686,080.23

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Double scale
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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.