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Finding the Fourth Proportional to 806,824.60, 1,210,984.70 and 407,746.28

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Solution

The fourth proportional to 806,824.60, 1,210,984.70 and 407,746.28 is: 611,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,824.60 : 1,210,984.70 = 407,746.28 : x
  2. Step 2: Convert to fraction form
    806,824.60/1,210,984.70 = 407,746.28/x
  3. Step 3: Cross multiply
    806,824.60x = 1,210,984.70 × 407,746.28
  4. Step 4: Simplify right side
    806,824.60x = 493,774,506,561.92
  5. Step 5: Solve for x
    x = 493,774,506,561.92/806,824.60
  6. Step 6: Final answer
    x = 611,997.34

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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.