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Finding the Fourth Proportional to 554,328.62, 764,975.32 and 299,681.64

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Solution

The fourth proportional to 554,328.62, 764,975.32 and 299,681.64 is: 413,561.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,328.62 : 764,975.32 = 299,681.64 : x
  2. Step 2: Convert to fraction form
    554,328.62/764,975.32 = 299,681.64/x
  3. Step 3: Cross multiply
    554,328.62x = 764,975.32 × 299,681.64
  4. Step 4: Simplify right side
    554,328.62x = 229,249,058,457.13
  5. Step 5: Solve for x
    x = 229,249,058,457.13/554,328.62
  6. Step 6: Final answer
    x = 413,561.65

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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.