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Finding the Fourth Proportional to 713,762.16, 985,019.38 and 391,485.84

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Solution

The fourth proportional to 713,762.16, 985,019.38 and 391,485.84 is: 540,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,762.16 : 985,019.38 = 391,485.84 : x
  2. Step 2: Convert to fraction form
    713,762.16/985,019.38 = 391,485.84/x
  3. Step 3: Cross multiply
    713,762.16x = 985,019.38 × 391,485.84
  4. Step 4: Simplify right side
    713,762.16x = 385,621,139,395.58
  5. Step 5: Solve for x
    x = 385,621,139,395.58/713,762.16
  6. Step 6: Final answer
    x = 540,265.60

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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.