Home / 9,120,307.89-12,586,018.21-4,990,366.15

Finding the Fourth Proportional to 9,120,307.89, 12,586,018.21 and 4,990,366.15

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Solution

The fourth proportional to 9,120,307.89, 12,586,018.21 and 4,990,366.15 is: 6,886,701.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120,307.89 : 12,586,018.21 = 4,990,366.15 : x
  2. Step 2: Convert to fraction form
    9,120,307.89/12,586,018.21 = 4,990,366.15/x
  3. Step 3: Cross multiply
    9,120,307.89x = 12,586,018.21 × 4,990,366.15
  4. Step 4: Simplify right side
    9,120,307.89x = 62,808,839,238,467.60
  5. Step 5: Solve for x
    x = 62,808,839,238,467.60/9,120,307.89
  6. Step 6: Final answer
    x = 6,886,701.63

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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.