Home / 660,913.16-990,039.18-305,437.64

Finding the Fourth Proportional to 660,913.16, 990,039.18 and 305,437.64

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Solution

The fourth proportional to 660,913.16, 990,039.18 and 305,437.64 is: 457,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,913.16 : 990,039.18 = 305,437.64 : x
  2. Step 2: Convert to fraction form
    660,913.16/990,039.18 = 305,437.64/x
  3. Step 3: Cross multiply
    660,913.16x = 990,039.18 × 305,437.64
  4. Step 4: Simplify right side
    660,913.16x = 302,395,230,646.74
  5. Step 5: Solve for x
    x = 302,395,230,646.74/660,913.16
  6. Step 6: Final answer
    x = 457,541.55

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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.