Home / 900,434,999.72-1,242,639,135.36-498,548,746.24

Finding the Fourth Proportional to 900,434,999.72, 1,242,639,135.36 and 498,548,746.24

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Solution

The fourth proportional to 900,434,999.72, 1,242,639,135.36 and 498,548,746.24 is: 688,018,772.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,434,999.72 : 1,242,639,135.36 = 498,548,746.24 : x
  2. Step 2: Convert to fraction form
    900,434,999.72/1,242,639,135.36 = 498,548,746.24/x
  3. Step 3: Cross multiply
    900,434,999.72x = 1,242,639,135.36 × 498,548,746.24
  4. Step 4: Simplify right side
    900,434,999.72x = 619,516,182,962,485,632
  5. Step 5: Solve for x
    x = 619,516,182,962,485,632/900,434,999.72
  6. Step 6: Final answer
    x = 688,018,772.21

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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.