Home / 458,171,903.40-686,502,027.90-390,147,455.40

Finding the Fourth Proportional to 458,171,903.40, 686,502,027.90 and 390,147,455.40

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Solution

The fourth proportional to 458,171,903.40, 686,502,027.90 and 390,147,455.40 is: 584,577,573.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,171,903.40 : 686,502,027.90 = 390,147,455.40 : x
  2. Step 2: Convert to fraction form
    458,171,903.40/686,502,027.90 = 390,147,455.40/x
  3. Step 3: Cross multiply
    458,171,903.40x = 686,502,027.90 × 390,147,455.40
  4. Step 4: Simplify right side
    458,171,903.40x = 267,837,019,312,124,768
  5. Step 5: Solve for x
    x = 267,837,019,312,124,768/458,171,903.40
  6. Step 6: Final answer
    x = 584,577,573.01

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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.