Home / 487,920.60-731,880.90-172,409.40

Finding the Fourth Proportional to 487,920.60, 731,880.90 and 172,409.40

Calculator

Solution

The fourth proportional to 487,920.60, 731,880.90 and 172,409.40 is: 258,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,920.60 : 731,880.90 = 172,409.40 : x
  2. Step 2: Convert to fraction form
    487,920.60/731,880.90 = 172,409.40/x
  3. Step 3: Cross multiply
    487,920.60x = 731,880.90 × 172,409.40
  4. Step 4: Simplify right side
    487,920.60x = 126,183,146,840.46
  5. Step 5: Solve for x
    x = 126,183,146,840.46/487,920.60
  6. Step 6: Final answer
    x = 258,614.10

Related Problems

Find fourth proportional to 243,960.30, 365,940.45 and 86,204.70
Half scale
Find fourth proportional to 975,841.20, 1,463,761.80 and 344,818.80
Double scale
Find fourth proportional to 487,921.60, 731,882.40 and 172,410.40
Similar ratio
Find fourth proportional to 731,880.90, 1,097,821.35 and 258,614.10
1.5x scale

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.