Home / 430,618,281.80-646,076,721.90-188,454,979.40

Finding the Fourth Proportional to 430,618,281.80, 646,076,721.90 and 188,454,979.40

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Solution

The fourth proportional to 430,618,281.80, 646,076,721.90 and 188,454,979.40 is: 282,747,808.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,618,281.80 : 646,076,721.90 = 188,454,979.40 : x
  2. Step 2: Convert to fraction form
    430,618,281.80/646,076,721.90 = 188,454,979.40/x
  3. Step 3: Cross multiply
    430,618,281.80x = 646,076,721.90 × 188,454,979.40
  4. Step 4: Simplify right side
    430,618,281.80x = 121,756,375,316,484,032
  5. Step 5: Solve for x
    x = 121,756,375,316,484,032/430,618,281.80
  6. Step 6: Final answer
    x = 282,747,808.12

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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.