Home / 670,009,541.20-1,005,014,311.80-515,041,345.60

Finding the Fourth Proportional to 670,009,541.20, 1,005,014,311.80 and 515,041,345.60

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Solution

The fourth proportional to 670,009,541.20, 1,005,014,311.80 and 515,041,345.60 is: 772,562,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,009,541.20 : 1,005,014,311.80 = 515,041,345.60 : x
  2. Step 2: Convert to fraction form
    670,009,541.20/1,005,014,311.80 = 515,041,345.60/x
  3. Step 3: Cross multiply
    670,009,541.20x = 1,005,014,311.80 × 515,041,345.60
  4. Step 4: Simplify right side
    670,009,541.20x = 517,623,923,496,729,984
  5. Step 5: Solve for x
    x = 517,623,923,496,729,984/670,009,541.20
  6. Step 6: Final answer
    x = 772,562,018.40

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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.