Home / 528,401,621.60-792,602,432.40-390,652,114.40

Finding the Fourth Proportional to 528,401,621.60, 792,602,432.40 and 390,652,114.40

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Solution

The fourth proportional to 528,401,621.60, 792,602,432.40 and 390,652,114.40 is: 585,978,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,401,621.60 : 792,602,432.40 = 390,652,114.40 : x
  2. Step 2: Convert to fraction form
    528,401,621.60/792,602,432.40 = 390,652,114.40/x
  3. Step 3: Cross multiply
    528,401,621.60x = 792,602,432.40 × 390,652,114.40
  4. Step 4: Simplify right side
    528,401,621.60x = 309,631,816,095,643,008
  5. Step 5: Solve for x
    x = 309,631,816,095,643,008/528,401,621.60
  6. Step 6: Final answer
    x = 585,978,171.60

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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.