Home / 645,646.64-890,461.77-573,102.50

Finding the Fourth Proportional to 645,646.64, 890,461.77 and 573,102.50

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Solution

The fourth proportional to 645,646.64, 890,461.77 and 573,102.50 is: 790,410.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,646.64 : 890,461.77 = 573,102.50 : x
  2. Step 2: Convert to fraction form
    645,646.64/890,461.77 = 573,102.50/x
  3. Step 3: Cross multiply
    645,646.64x = 890,461.77 × 573,102.50
  4. Step 4: Simplify right side
    645,646.64x = 510,325,866,541.43
  5. Step 5: Solve for x
    x = 510,325,866,541.43/645,646.64
  6. Step 6: Final answer
    x = 790,410.47

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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.