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Finding the Fourth Proportional to 616,616.64, 850,955.76 and 358,492.32

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Solution

The fourth proportional to 616,616.64, 850,955.76 and 358,492.32 is: 494,733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,616.64 : 850,955.76 = 358,492.32 : x
  2. Step 2: Convert to fraction form
    616,616.64/850,955.76 = 358,492.32/x
  3. Step 3: Cross multiply
    616,616.64x = 850,955.76 × 358,492.32
  4. Step 4: Simplify right side
    616,616.64x = 305,061,104,619.76
  5. Step 5: Solve for x
    x = 305,061,104,619.76/616,616.64
  6. Step 6: Final answer
    x = 494,733.82

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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.