Home / 686,667,567.76-947,786,473.47-448,507,701.88

Finding the Fourth Proportional to 686,667,567.76, 947,786,473.47 and 448,507,701.88

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Solution

The fourth proportional to 686,667,567.76, 947,786,473.47 and 448,507,701.88 is: 619,061,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,667,567.76 : 947,786,473.47 = 448,507,701.88 : x
  2. Step 2: Convert to fraction form
    686,667,567.76/947,786,473.47 = 448,507,701.88/x
  3. Step 3: Cross multiply
    686,667,567.76x = 947,786,473.47 × 448,507,701.88
  4. Step 4: Simplify right side
    686,667,567.76x = 425,089,533,088,979,328
  5. Step 5: Solve for x
    x = 425,089,533,088,979,328/686,667,567.76
  6. Step 6: Final answer
    x = 619,061,614.45

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Double scale
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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.