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Finding the Fourth Proportional to 459,031.40, 688,547.10 and 407,855.60

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Solution

The fourth proportional to 459,031.40, 688,547.10 and 407,855.60 is: 611,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,031.40 : 688,547.10 = 407,855.60 : x
  2. Step 2: Convert to fraction form
    459,031.40/688,547.10 = 407,855.60/x
  3. Step 3: Cross multiply
    459,031.40x = 688,547.10 × 407,855.60
  4. Step 4: Simplify right side
    459,031.40x = 280,827,790,598.76
  5. Step 5: Solve for x
    x = 280,827,790,598.76/459,031.40
  6. Step 6: Final answer
    x = 611,783.40

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Similar ratio
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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.