Home / 458,171,905.40-686,502,030.90-390,147,457.40

Finding the Fourth Proportional to 458,171,905.40, 686,502,030.90 and 390,147,457.40

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Solution

The fourth proportional to 458,171,905.40, 686,502,030.90 and 390,147,457.40 is: 584,577,576.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,171,905.40 : 686,502,030.90 = 390,147,457.40 : x
  2. Step 2: Convert to fraction form
    458,171,905.40/686,502,030.90 = 390,147,457.40/x
  3. Step 3: Cross multiply
    458,171,905.40x = 686,502,030.90 × 390,147,457.40
  4. Step 4: Simplify right side
    458,171,905.40x = 267,837,021,855,571,200
  5. Step 5: Solve for x
    x = 267,837,021,855,571,200/458,171,905.40
  6. Step 6: Final answer
    x = 584,577,576.01

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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.