Home / 1,172,443,666.16-1,618,000,369.86-636,617,915.21

Finding the Fourth Proportional to 1,172,443,666.16, 1,618,000,369.86 and 636,617,915.21

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Solution

The fourth proportional to 1,172,443,666.16, 1,618,000,369.86 and 636,617,915.21 is: 878,547,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,443,666.16 : 1,618,000,369.86 = 636,617,915.21 : x
  2. Step 2: Convert to fraction form
    1,172,443,666.16/1,618,000,369.86 = 636,617,915.21/x
  3. Step 3: Cross multiply
    1,172,443,666.16x = 1,618,000,369.86 × 636,617,915.21
  4. Step 4: Simplify right side
    1,172,443,666.16x = 1,030,048,022,269,282,176
  5. Step 5: Solve for x
    x = 1,030,048,022,269,282,176/1,172,443,666.16
  6. Step 6: Final answer
    x = 878,547,986.57

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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.