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Finding the Fourth Proportional to 480,013.32, 662,390.93 and 286,639.23

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Solution

The fourth proportional to 480,013.32, 662,390.93 and 286,639.23 is: 395,545.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,013.32 : 662,390.93 = 286,639.23 : x
  2. Step 2: Convert to fraction form
    480,013.32/662,390.93 = 286,639.23/x
  3. Step 3: Cross multiply
    480,013.32x = 662,390.93 × 286,639.23
  4. Step 4: Simplify right side
    480,013.32x = 189,867,226,262.51
  5. Step 5: Solve for x
    x = 189,867,226,262.51/480,013.32
  6. Step 6: Final answer
    x = 395,545.75

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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.