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Finding the Fourth Proportional to 661,689,116.40, 992,533,674.60 and 201,626,547.60

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Solution

The fourth proportional to 661,689,116.40, 992,533,674.60 and 201,626,547.60 is: 302,439,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,689,116.40 : 992,533,674.60 = 201,626,547.60 : x
  2. Step 2: Convert to fraction form
    661,689,116.40/992,533,674.60 = 201,626,547.60/x
  3. Step 3: Cross multiply
    661,689,116.40x = 992,533,674.60 × 201,626,547.60
  4. Step 4: Simplify right side
    661,689,116.40x = 200,121,138,186,339,808
  5. Step 5: Solve for x
    x = 200,121,138,186,339,808/661,689,116.40
  6. Step 6: Final answer
    x = 302,439,821.40

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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.