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Finding the Fourth Proportional to 640,430.10, 960,643.86 and 601,457.76

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Solution

The fourth proportional to 640,430.10, 960,643.86 and 601,457.76 is: 902,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,430.10 : 960,643.86 = 601,457.76 : x
  2. Step 2: Convert to fraction form
    640,430.10/960,643.86 = 601,457.76/x
  3. Step 3: Cross multiply
    640,430.10x = 960,643.86 × 601,457.76
  4. Step 4: Simplify right side
    640,430.10x = 577,786,704,193.35
  5. Step 5: Solve for x
    x = 577,786,704,193.35/640,430.10
  6. Step 6: Final answer
    x = 902,185.43

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1.5x scale

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.